Hydrogen Bond disrupting inter-chain

Humidity and Heat. Moisture is crucial to the normal behaviour of cellulosic fibres. Under moderate conditions (relative humidity 45-65%) water is readily absorbed through the network of pores running through a fibre cell, it coats cellulose crystallites and acts as a plasticiser of the amorphous regions, disrupting inter-chain hydrogen bonds. Without this bound water the fibre would be permanently brittle, with an effective glass transition point way above room temperature. 

DSC studies have shown that modification alters thermal transition temperatures and the overall enthalpy (AHgei) associated with gelatinization (Tables 10.13 and 10.14). Upon hydroxypropylation, the reactive groups introduced into the starch chains are capable of disrupting the inter-and intra-molecular hydrogen bonds, leading to an increase in accessibility by water that lowers... 

The above denaturants disrupt Inter- and Intrachaln noncovalent interactions Including hydrogen, Ionic, or hydrophobic bonding between amino acid residues. However, many proteins contain disulfide linkages between cysteine residues within a single protein molecule or between separate chains. The presence of disulfide bonds can prevent the complete dissociation of multl-merlc proteins and the complete conversion of single protein to a random coll conformation In denaturing solvents. 

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